2022-02-10_REVISION - M2022004 - Laserfiche WebLink

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EXHIBIT C - MINING PLAN The information provided in this Exhibit is intended to satisfy the requirements outlined in Section 6.3.3 of the Colorado Mined Land Reclamation Board Construction Material Rules and Regulations: (a) Specify the estimated dates that mining will commence and end.If the operation is intended to be an intermitted operation as defined in C.R.S 34-32.5-103(11)(b),the Applicant should include in this exhibit a statement that conforms to the provisions of Section 31-32.5- 103(11)(b), C.R.S; Mining will commence as soon as possible after the approval of this application which is estimated to be in February. The owner of the property is concurrently applying for a DRMS 112 permit and mining under this DRMS 111 permit will end after approval of the 112 permit or once the permittee has reached the grade shown on the mining plan map. The expected end date for the project is December 2023 or earlier if the above conditions are met. (b) the estimated depth to which soil,suitable as a plant growth medium, will be salvaged for use in the reclamation process. This description must be consistent with information provided in Exhibit B. Sufficient soil must be salvaged to meet the vegetation establishment criteria of Rule 3.1.10.If plant growth medium is not reapplied on a graded area immediately after salvage, then the Operator/Applicant must specify how the topsoil will be stockpiled and stabilized with a vegetative cover or other means until used in reclamation.Plant growth medium stockpiles must be located separate from other stockpiles, out of the way of mine traffic and out of stream channels or drainageways. The location of plant growth medium stockpiles must be shown on Exhibit E-Map; From the exploratory borings that were drilled at the site in 2021,the estimated suitable soil for plant growth is approximately 12 inches.The top 12 inches of soil will be stockpiled to the southern side of the affected area as shown on the Mining Plan Map in Exhibit E. In the event that the topsoil is not utilized within 180 days vegetative cover will be planted.The Weld County seed mix for areas south of County Road 68 will be used. Areas South of County Road 68 • Mix Western Wheatgrass (Arriba, Barton, Rosana) 2.50 Ibs pis/acre • Blue Grama (Hachital, Lovington) 1.50 Ibs pls/acre • Sideoats Grama (Vaughn, Butte, Niner, El Reno, Haskell) 2.25 Ibs pis/acre • Smooth Brome (Lincoln, Manchar) 2.00 Ibs pis/acre • Sand dropseed 0.25 Ibs pis/acre • Perennial Ryegrass (Calibra or Garibaldi tetraploid) 0.75 Ibs pls/acre • Slender Wheatgrass (Pryor, Revenue or San Luis) 2.50 Ibs pls/acre • Alkaligrass (Fuits II, Salt on Sea) 1.25 Ibs pls/acre • Switchgrass (Nebraska 28, Blackwell) 1.00 Ibs pis/acre Total: 14.00 pound pls/acre (c) specify the thickness of overburden or quantity of waste rock, if any, to be removed to reach the deposit. The location of any overburden stockpiles or waste rock fills must be shown on Exhibit E-Map; Section 20—Gravel Mine—MLRB 111 Permit Amendment Exhibit C